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Not sure thats true saying gas vapour is colder than petrol vapours.
Ive melted many a carbie from running my gas too lean,

Also using "Y" pieces instead of "T" pieces will decrease the chance of cavitation.

I have heard some use Araldite on the tank wiring
to prevent it coming loose and possible causing sparks.
All wiring should be done by a qualified gas fitter IMO